Same /i/ sound: only the spelling changes. After the linking u and after qu, write y (tuy, quý). In some words i and y are free variants: kỳ or kì, lý or lí. Not to be confused with ai / ay, where the length of the a changes.
tuy · quý · kỳ · kì
nh / ch at the end
The finals NH and CH only come after a, ê and i (anh, ếch, ích). After ê and i, always NH / CH, never ng / c (bệnh, ích). After a, both exist and make different words (anh / ang, ách / ác). In the South, -nh sounds like -n (anh = /an/).
anh · bánh · ích · bệnh · sạch
Quick answers
How do you pronounce Linh?
Block by block: i → nh → inh → l → linh. Tone: ngang (no mark · level). Read each block aloud, then compare with the recording, in a Southern or a Northern voice.
What tone is Linh?
ngang (no mark · level)
Is Linh said differently in the South and the North?
South · Sài Gòn: inh = in. North · Hà Nội: said as written.